Joseph Mark Ciszewski, D.O.
Internal Medicine Physician · Palm Harbor, FL
Joseph Mark Ciszewski, D.O. is an internal medicine physician with a practice address in Palm Harbor, Florida, and NPI 1366937856, issued on Jun 27, 2018. Check the license (Florida OS17776, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Joseph Mark Ciszewski
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS17776 FL
Self-reported in NPPES; status is on the state search - Practice location
- 36440 US Highway 19 N, Palm Harbor, FL 34684
- Phone
- (727) 786-0696
- Enumerated
- Jun 27, 2018
- Record last updated
- Mar 30, 2026
- Fax
- (727) 669-9742
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Also registered at 36440 US Highway 19 N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph Mark Ciszewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS17776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,722 Medicare Part D claims for 474 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 69 claims were for opioids.
Most prescribed
- Atorvastatin Calcium123 claims
- Gabapentin119 claims
- Amlodipine Besylate88 claims
- Lisinopril79 claims
- Losartan Potassium78 claims
- Levothyroxine Sodium59 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,002.74
45 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joseph Mark Ciszewski among 10,151 internal medicine physician records in Florida
Joseph Mark Ciszewski, D.O. is one of 10,151 internal medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in Palm Harbor
They are 35 of the 1,358 NPPES records with a practice address in Palm Harbor, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Palm Harbor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Philip Bagenski, M.D.Palm Harbor, FL 346841811984818
- Patrick Cinelli, M.D.Palm Harbor, FL 346841598793861
- Ricardo Delgado, MDPalm Harbor, FL 346841891768453
- Yael Ellis, M.D.Palm Harbor, FL 346841255381604
- Laura Gaffney, MDPalm Harbor, FL 346841679530265
- Kurt Harris, M.D.Palm Harbor, FL 346841053308270
- Anita Kundra, MDPalm Harbor, FL 346841134185820
- Hans Langschwager, M.D.Palm Harbor, FL 346841215942610
Common questions
What is Joseph Mark Ciszewski, D.O.'s NPI number?
Joseph Mark Ciszewski, D.O.'s National Provider Identifier (NPI) is 1366937856, issued on Jun 27, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Mark Ciszewski, D.O. located?
The NPPES record lists a practice address at 36440 US Highway 19 N, Palm Harbor, FL, 34684. Phone: (727) 786-0696. Providers update this record themselves, so call before visiting.
How can I verify Joseph Mark Ciszewski, D.O.'s license?
NPPES lists Florida license number OS17776, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Mark Ciszewski, D.O. prescribe under Medicare Part D?
In 2024, Joseph Mark Ciszewski, D.O. had 2,722 Medicare Part D claims for 474 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.